SOLUTION: If 10a+2b=15 and 5a=4b,what is the value of a+b?

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Question 1156820: If 10a+2b=15 and 5a=4b,what is the value of a+b?
Answer by Alan3354(69443) About Me  (Show Source):
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If 10a+2b=15 and 5a=4b,what is the value of a+b?
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10a+2b=15
5a=4b ---> 10a = 8b
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10a+2b=15
10a = 8b
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8b + 2b = 15
b = 1.5
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a = 1.2
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a+b = 2.7